package com.anno;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;

public class DemoInterceptor extends HandlerInterceptorAdapter {

	@Override
	public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
			throws Exception {
		Long startTime = System.currentTimeMillis();
		request.setAttribute("startTime", startTime);
		return true;
	}

	
	@Override
	public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler,
			ModelAndView modelAndView) throws Exception {
		Long startTime = (Long) request.getAttribute("startTime");
		Long endTime = System.currentTimeMillis();
		System.out.println("总共花费时间" + new Long(endTime - startTime) + "ms");
	}
}
